A quaternion-based switching filter for colour image denoising.
Gaihua WangYang LiuTongzhou ZhaoPublished in: Signal Process. (2014)
Keyphrases
- feature vectors
- image denoising
- nonlocal means
- wavelet coefficients
- denoising
- bilateral filter
- nonlinear filters
- noisy images
- natural images
- bilateral filtering
- total variation
- denoising methods
- wavelet denoising
- edge preservation
- denoising algorithm
- multiplicative noise
- wavelet domain
- image processing
- partial differential equations
- additive gaussian noise
- noise removal
- filtering algorithm
- nonlinear diffusion
- fourier transform
- total variation regularization
- wavelet domain hidden markov tree
- undecimated wavelet transform
- removing noise
- nl means
- input image
- noise suppression
- signal processing
- image quality
- color images
- fourth order
- colour images
- anisotropic diffusion
- parameter selection